However, after 6 afebrile days, she developed recurrent high-grade fever (40.3°C), pancytopenia (WBC 1.81 × 109/L, ANC 0.23 × 109/L, Hb 80 g/L, platelets 74 × 109/L), hepatitis (AST 338 U/L, ALT 221 U/L), and rising serum ferritin (609.3 ng/mL) and PCT (3.057 ng/mL). The gene discussed is GSTM1; the disease is Hepatitis.